Improvement in attachment for sewing-machine



2 Sheets-Sheet I.

E. S. YENTZER..

Sewing- Machine Attachment.

[Patented Oct. 26. 1869.

2 Sheets-Sheet 2. E. S. YENTZER.

Sewing-Machine Attachment.

' Patented Oct. 26,1869;

duh-ed I ,%tates Letters Patent No. 96,180, dated October 26, 1869.

IMPROVEMENT IN ATTACHMENT roR SEWING-MACHINE.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom infancy-concern Be it known that I, ENOCH S. YENTZER, ofOttawa, in the county of La Salle, and State of Illinois, have inventeda new and improved Seamer; and I do hereby declare that the following isa full, clear, and exact description thereof, reference being had to theaccom- "an in drawin s makin art of this s ecifioation in P y a a; P 1

which- Figure 1, plate 1, is a perspective view of my improvedinstrument, adapted for use upon the clothplate of a sewing-machine.

Figure 2, plate 1, is a top view of the instrument.

Figure 3, plate 1, is a front edge view of the instru ment.

Figure 4, plate 1, is an enlarged view of the turning-devices. Figure 5,plate '1, are views of a turning-device, differing somewhat from theturning-devic'epf figs. 1, 2, and 3. v p

Figures 6 and 7, plate 2, are views showing the I single lapped seam,with one raw edge exposed.

. pieces, 1 2,0!" cloth, united at their edges by lapping or turning anarrow portion, 7, of the edge of the piece'2 over the edge 6 of thepiece 1, andthen stitch ing through the three thicknesses of cloth. Inthis way one raw edge is enclosed by the lapped portion.

The raw edge of the lapped portion 7 may be left exposed, as shown, orthis edge may be turned under and stitched down, as will be hereinafterexplained.

Previous to turning or lapping the portions 7, and after the piece 1 hasbeen properly adjusted upon the piece 2, with the wrong sides ofthe twopieces together, they should be basted so as to-kcep them smooth, andpreserve a uniformity in width of the seam.

The two pieces, 1 and 2, having been stitched to gether at 3, the toppiece 1 is turnedover the lapped portion 7, as shown in figs. 8 and 9,and stitched at 4 through four thicknesses of cloth.

A seam thus produced will have both raw edges of the pieces 1 and 2closed, and will expose two rows of stitching on theright side of thecloth, which is the bottom side in fig. 8.

If the raw edge 7 of the piece 2 is turned under and stitched, as abovestated, and a row of stitching is made along the folded part, so as tostitch this part to the piece 2, a seam will be produced which will havethe appearance, on the right side of the cloth, of a narrowcovering-strip stitched along both edges.

The seam which I- have above described can be conveniently and rapidlyproduced upon the clothplate of a sewing-machine by the attachment tosuch plate of an instrument constructed as shown on plate 1 of theaccompanying drawings.

A represents the. base-plateof the instrument, which. has a slot, a,through one portion,through which the screw passes that is used tosecurethe instrument upon the cloth-plate of a sewing-machine. A long, narrowtongue or guide, a, is also formed on this plate A, which may be markedoff. for indicating the widths of seams which it is desired to make.

B represents a follower, which is perforated at b, to allow the needleto play through it, and which is formed on a narrow spring portion 1),that is secured permanently to the surface of the plate A, in theposition in figs. 1 andFZ'. This plate B is arranged so that thepresser-foot of the sewing-machine will hold it down upon the work, andso that when-the presser-foot is raised, the plate will spring up freefrom the cloth.

G represents a spring-turner, which is used for turning under the rawedge of the lapped portion 7 of the strip 2, as above described;

Vhen it is not required to turn under the edge of this lapped portion 7,a simple guide, as shown in fig. 5, may be used in place of the turner.

The free end of this guide is curved under so, as to form a small lip.

The free end of the turner C is curved, as shown atc, figs. 1 and 3. I

That end of the turner which is secured to the plate A by athuInb-nut,G, andfixcd screw-thread, g, is slotted at e to allow of its adjustmentfor seams of different widths.

Instead of slottingthe shank of the turner O-longitudinally, as shown infigs. 1 and 2, this shank may 1 be slotted or notched transversely, asshown at c, fig. 5, to receive the screw-stud g, and perforated'at c toreceive a fixed stud, g.

The latter construction is best, for the reason that it admits of thedetachment of the turner from the instrument without removing the nut G.

The turning-lip c is arranged between the followerplate B and thelappingdip d. v This lapping-lip d is curved in adirection opposite. tothe curve of the lip 42, and forms, in conjunction with the lip c, aslot through which theworkis. drawn on its way-beneath the needle.

The lip dis formed on an adjustable gauge-plate, D, which is slotted atd, and secured in place by the thumb-nut G..

The gauge 8' lies transversely across the narrow graduated tongue to oftheplate, and is formed on'tbe narrow extension s of the plate 1), asclearly shown in the drawings.

v ()n that edge ,of the ,plate D which is next the turner G, andprotruding transversely from the curved shoulder of the lapping-lip is anarrowguide, t, which extends across the tongue a, and beneath thefollower-plate B.

This guidet keeps the lapped portion of r the cloth in its proper placewith respect to the needle at the point where the stitchesare formed.

In fig. 4, of plate 1, I have represented the instrument in the act oflapping and turning the edge of one piece, 2, of cloth over the edge ofapiece, 1, for producing a seam representing a narrow piece stitched onthe cloth.

For a simple seam, such is represented in figs. 6 and 7, the turner 0,shown in figs. 1, 2, 3, and 4, is not used.

.Vhiie I prefer to employ the instrument herein described for producingthe improved lapped scam, I do not confine myself to thepreciseconstruction .of

this instrument, as the turning and lapping-device$ may be varied intheir construction.

The gauge s, lying across the graduated tongue a, serves as a convenientmeans for indicating the width of space between the turning-lips orbooks, so that the instrument can be quickly and accurately set for aseam of any given width.

What I claim as new,-and desire to secure by Letters Patent, is-- 1'. Aninstrument for producing the seam herein described, consisting of partsA, a B, D, .d, and s, constructed so as to operate substantially as setforth.

2. The adjustable lapping-hook d and turner or guide 0, combined with agauge, 3', substantially as described.

3. The lapping-hook d, the turner or guide 0, the guide t, and thefollower-plate B, constructed and combined substantially asdescribed.

ENOGH S. YENTZER.

Witnesses:

J N0. N. Snnnnn, HENRY A. SHULER.

